I've already read up on what needs to be done in order to add funds to your account to purchase things (I want lemmings and tekken DR for example) However I can't get this working.

I'm based in the uk, so im curious as to if this matters?

Basically the playstation says my credit card info is not valid and asks me to check it. Can't remember what the exact message is

Alternatively, anyone willing to share?

PSN ID: InsertDisk2